When she won at Sandown Lakeside last start, jockey Teo Nugent said she was gutsy for a horse that was 12 or 13 hands. Pria Eclipse isn’t 12 hands. Trainer Dan O’Sullivan’s staff have measured her to be 13.3 hands — as small as they come in thoroughbred racing. O’Sullivan said she would qualify to compete in pony club events, but “she’s got a big engine